SOLUTION: Prove that (sin³A + cos³A)/(sinA + cosA) + (sin³A - cos³A)/(sinA - cosA) = 2
Algebra
->
Test
-> SOLUTION: Prove that (sin³A + cos³A)/(sinA + cosA) + (sin³A - cos³A)/(sinA - cosA) = 2
Log On
Test Calculators and Practice
Test
Answers archive
Answers
Word Problems
Word
Lessons
Lessons
Click here to see ALL problems on test
Question 1136231
:
Prove that (sin³A + cos³A)/(sinA + cosA) + (sin³A - cos³A)/(sinA - cosA) = 2
Answer by
MathLover1(20849)
(
Show Source
):
You can
put this solution on YOUR website!
Prove that
use Factoring a Sum of Cubes rule:
.........simplify